Comparison of upper gastrointestinal contrast studies and pH/impedance tests for the diagnosis of childhood gastro-oesophageal reflux

摘要

The upper gastrointestinal (UGI) contrast study is used in the assessment of children with gastro-oesophageal reflux (GOR) and for detection of structural anomalies. The pH study is more sensitive than the UGI study for the diagnosis of GOR. The pH study has been replaced by the pH/impedance test, which detects both acid and nonacid reflux.